R. Recording Ing

Shotgun

The need for a microphone with extremely narrow coverage angles (60 ° to 30 °), to capture long distance led the researchers to create a new type of polar diagram based on phase interference. Inside the tube is not hollow but has a series of pieces that are designed to correct acoustic impedance and frequency response of the system.


When the source is next to the microphone, each of which penetrates through slots arias at the same time. In this case, each section of the wave reaches the membrane with a different delay resulting in a series of phase interference. In this type of microphone, the frequency response varies greatly for each angle of incidence. He is able to "isolate" sounds almost entirely indirect and has high sensitivity to sounds from the axis of capture.

Shotgun

Parabolic

The effect of the parabola, whose thoughts are all directed to the same extent, causes an amplification of the sound being captured. The problem is that he does not respond to waves larger than the diameter of the disk, this can make it sound artificial. It's recommended for capturing sounds with limited frequency response and long distances.

Parabolic Microphone

Lavalier microphone

Microphones are usually the type electret condenser or of small dimensions that can be disguised and used in less common sites. They are usually placed on the chest, where the issue of voice is not ideal. Suffer greatly from the interaction of where they are placed and in many cases are subject to noise and other clothing accessories. Often they have enhanced frequency response in the highs that often serves to compensate for the loss of brightness caused by the absorption of tissues placed around the capsule. Are mostly ominidirecionais.

Lavalier Microphone